@font-face {
  font-family: "Mulish";
  src: url("fonts/mulish-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 1000;
  font-display: swap;
}
@font-face {
  font-family: "Open Sans";
  src: url("fonts/open-sans-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 800;
  font-display: swap;
}
@font-face {
  font-family: "Open Sans";
  src: url("fonts/open-sans-latin-wght-italic.woff2") format("woff2");
  font-weight: 300 800;
  font-style: italic;
  font-display: swap;
}

:root {
  --heading: #3c424f;
  --text: #5f6b7c;
  --blue: #03a9f4;
  --orange: #ffd11b;
  --yellow: #ffd11b;
  --dark: #222;
  --light: #f5fafd;
  --topbar-height: 4.5rem;
}

* { box-sizing: border-box; }

html {
  background: #000;
  scroll-behavior: smooth;
  scroll-padding-top: var(--topbar-height);
}

body {
  margin: 0;
  font: 400 1rem/1.7 "Open Sans", sans-serif;
  color: var(--text);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }

h1, h2, h3 { color: var(--heading); line-height: 1.25; }
h1 {
  font: 600 clamp(1.8rem, 4vw, 2.5rem)/1.2 "Mulish", sans-serif;
  text-align: center;
  margin: 0 0 2.5rem;
}
h2, h3 { font-size: 1.1rem; font-weight: 600; margin: 2rem 0 .75rem; }

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--topbar-height);
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  background: rgba(34, 34, 34, .96);
}
.logo img { height: 3rem; width: auto; }
.social { display: flex; gap: 1.25rem; }
.social a { display: block; color: #fff; }
.social a:hover { color: var(--blue); }
.social svg { display: block; width: 1.5rem; height: 1.5rem; }

/* Page */
.page { max-width: 1320px; margin: 0 auto; background: #fff; }

.hero {
  display: grid;
  place-items: center;
  min-height: min(75vh, 46rem);
  padding: 2rem;
  background: linear-gradient(rgba(0, 0, 0, .15), rgba(0, 0, 0, .15)), url("img/hero.jpg") center / cover;
}
.hero p {
  margin: 0;
  color: #fff;
  font: 300 clamp(2.5rem, 8vw, 4.5rem)/1.1 "Mulish", sans-serif;
  text-align: center;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .35);
}

section {
  display: flow-root;
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 4rem);
}
section:nth-child(even) { background: var(--light); }
section > * { max-width: 46rem; margin-left: auto; margin-right: auto; }

/* A single image in its own paragraph is placed next to the text */
section:has(> p > img:only-child) > * { max-width: 72rem; }
section > p:has(> img:only-child) {
  float: right;
  width: min(40%, 28rem);
  margin: .5rem 1.5rem 3rem 3rem;
}
section > p:has(> img:only-child) img { box-shadow: 1.5rem 1.5rem 0 var(--yellow); }

/* Several images in one paragraph form a photo strip */
p:has(> img ~ img) {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  max-width: 72rem;
}
p:has(> img ~ img) br { display: none; }
p:has(> img ~ img) img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

/* Blocks: every "## heading" */
.blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 3rem 2rem;
  max-width: 72rem;
}
.blocks:has(.yt) { grid-template-columns: repeat(auto-fit, minmax(min(24rem, 100%), 1fr)); }
.block { display: flex; flex-direction: column; }
.block > p:has(> img:only-child), .block > .yt { order: -1; margin: 0 0 1rem; }
.block > p > img:only-child { max-width: 16rem; }
.block > h2 { margin-top: 0; }
.block > p { margin: 0 0 .5rem; }
.block ul { list-style: none; margin: 0; padding: 0; line-height: 2; }

/* YouTube placeholder */
.yt-play {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--dark);
  text-decoration: none;
}
.yt-play img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.yt-button {
  position: relative;
  padding: .6rem 1.4rem;
  border-radius: 2rem;
  background: var(--yellow);
  color: #000;
  font-size: .85rem;
  font-weight: 600;
}
.yt-play:hover .yt-button { background: var(--blue); }
.yt-note { font-size: .75rem; line-height: 1.5; margin: .5rem 0 0; }
.yt iframe { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; }

footer {
  padding: 2rem 1rem;
  background: var(--dark);
  color: #aaa;
  font-size: .85rem;
  text-align: center;
}
footer a { color: #fff; }
footer .social { justify-content: center; margin-bottom: 1.25rem; }

@media (max-width: 800px) {
  section > p:has(> img:only-child) { float: none; width: auto; margin: 0 1rem 3rem 0; }
  section > p:has(> img:only-child) img { box-shadow: 1rem 1rem 0 var(--orange); }
}

/* Editing area (preview.php) */
.admin {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem 1.5rem;
  padding: .75rem clamp(1rem, 4vw, 2.5rem);
  background: var(--yellow);
  color: #000;
  font-size: .9rem;
}
.admin form { margin: 0; }
.admin a { color: #000; }
.admin-message { flex-basis: 100%; margin: 0; font-weight: 600; }
.admin-error { color: #b00020; }
.admin button, .login button {
  padding: .5rem 1.25rem;
  border: 0;
  border-radius: 2rem;
  background: var(--blue);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.login {
  display: grid;
  gap: 1rem;
  max-width: 22rem;
  margin: 15vh auto;
  padding: 2rem;
  background: #fff;
}
.login label { display: grid; gap: .25rem; }
.login input { padding: .5rem; border: 1px solid #ccc; font: inherit; }
.login-error { margin: 0; color: #b00020; }